In the midst of all the frustration from waiting for the new iMac, please allow me to share a positive story.
Like most people who have the 8800GS gfx card in 24" iMac (mid 2008), my card died on me after 4 years. It had vertical lines all over the screen & finally the iMac just simply freezes at the Apple boot logo. Unfortunately the Applecare warranty was expired a year ago.
So I decided to try my luck, at first my request to have the card replaced for minimal fee didn't work. Despite me providing evidence & reports of many such cases, the CSO just wouldn't budge.
So after a few days I tried again, this time I requested to talk to the Customer Relations Manager. Again, I presented some reports of how this is a widespread issue & some customers in the US was able to get their card replaced for free for their out-of-warranty machine. She was very nice & kind enough to review my case.
After my iMac was diagnosed at the Apple service centre, she gave me a good news. Apple was willing to replace the video card (it costs US$220) for free & I only have to pay the labour charge (US$80).
Some of you might be thinking, what's the big deal, its only $200. Sure I can just get the part from eBay, but I'm not trying to be cheap or unreasonable, its about Apple being responsible & providing the best customer service. Of course, YMMV.
I'm not sure if there are any companies out there that willing to replace your parts for free for a 4 year old & out-of-warranty computer?
Moreover, last year I had the LCD panel of this same iMac replaced for free just days before the Applecare expired. The LCD panel was full of dirty patches & burn marks from the super hot gfx card. The CSO refused to entertain me, he quoted me an exorbitant sum & wanted me to carry my iMac down for repair.
So I talked for the manager. Yep, the nice manager agreed to replace it for free...at my place. 
So please talk to your local Apple Customer Relations nicely & they will work out something for you. They certainly did for me & restored my faith in Apple.
Like most people who have the 8800GS gfx card in 24" iMac (mid 2008), my card died on me after 4 years. It had vertical lines all over the screen & finally the iMac just simply freezes at the Apple boot logo. Unfortunately the Applecare warranty was expired a year ago.
So I decided to try my luck, at first my request to have the card replaced for minimal fee didn't work. Despite me providing evidence & reports of many such cases, the CSO just wouldn't budge.
So after a few days I tried again, this time I requested to talk to the Customer Relations Manager. Again, I presented some reports of how this is a widespread issue & some customers in the US was able to get their card replaced for free for their out-of-warranty machine. She was very nice & kind enough to review my case.
After my iMac was diagnosed at the Apple service centre, she gave me a good news. Apple was willing to replace the video card (it costs US$220) for free & I only have to pay the labour charge (US$80).
Some of you might be thinking, what's the big deal, its only $200. Sure I can just get the part from eBay, but I'm not trying to be cheap or unreasonable, its about Apple being responsible & providing the best customer service. Of course, YMMV.
I'm not sure if there are any companies out there that willing to replace your parts for free for a 4 year old & out-of-warranty computer?
Moreover, last year I had the LCD panel of this same iMac replaced for free just days before the Applecare expired. The LCD panel was full of dirty patches & burn marks from the super hot gfx card. The CSO refused to entertain me, he quoted me an exorbitant sum & wanted me to carry my iMac down for repair.
So please talk to your local Apple Customer Relations nicely & they will work out something for you. They certainly did for me & restored my faith in Apple.